孤立性肺结节：良性与恶性对比.pptVIP免费

Thedifferentialdiagnosisofasolitarypulmonarynoduleisbroadandmanagementdependsonwhetherthelesionisbenignormalignant.孤立性肺结节的鉴别诊断是很多的，处理方法依赖于该病变是良性还是恶性InthisoverviewwewilldiscusssomeofthenewfeaturesthatcanhelptodifferentiatebetweenbenignandmalignantnodulesbaseduponCTandPET-CTfindings.在此篇文章，我们着重讨论下一些有助于鉴别良恶性结节的新特征，此特征是基于CT与PET-CT的检查结果第一页，共三十页。CT:benignversusCT:benignversusmalignantmalignantCalcificationSizeGrowthShapeMarginAirBronchogramsignSolidandGround-glasscomponentsContrastenhancement第二页，共三十页。CT:CT:良性与恶性良性与恶性钙化大小生长速度形状边缘支气管含气征实性或磨玻璃样增强特征第三页，共三十页。CalcificationCalcification钙化钙化Diffuse,central,laminatedorpopcorncalcificationsarebenignpatternsofcalcification.弥漫性，中心性，分层，爆米花钙化是良性钙化，第四页，共三十页。Thesetypesofcalcificationareseeningranulomatousdiseaseandhamartomas这些形式的钙化最常见于错构瘤、肉芽肿性病变第五页，共三十页。Theexceptiontotheruleaboveiswhenpatientsareknowntohaveaprimarytumor.Forinstancethediffusecalcificationpatterncanbeseeninpatientswithosteosarcomaorchondrosarcoma.SimilarlythecentralandpopcornpatterncanbeseeninpatientswithGI-tumorsandpatientswhopreviouslyhadchemotherapy.一些病人有原发肿瘤病史，可以表现为良性钙化例如骨肉瘤、软骨肉瘤可以表现弥漫性钙化。胃肠间质瘤的病人化疗后可以表现为中心性或苞米花钙化。第六页，共三十页。SizeSize大小大小Asolitarypulmonarynodule(SPN)isdefinedasasingleintraparenchymallesionlessthan3cminsizeandnotassociatedwithatelectasisorlymphadenopathy.Alesiongreaterthan3cmindiameteriscalledamass.孤立性结节定义为小于3cm，不伴有肺不张、淋巴结转移，大于3cm的为肿块Thisdistinctionismade,becauselesionsgreaterthan3cmareusuallymalignant,whilesmallerlesionscanbeeitherbenignormalignant.以3cm为界，因为大于3cm的通常是恶性的，而小于3cm的可能是良性或恶性。第七页，共三十页。RelationshipbetweenSPN-RelationshipbetweenSPN-sizeand...